1213303323 has 4 divisors (see below), whose sum is σ = 1617737768. Its totient is φ = 808868880.

The previous prime is 1213303319. The next prime is 1213303361. The reversal of 1213303323 is 3233033121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1213303323 - 2² = 1213303319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213303323.

It is not an unprimeable number, because it can be changed into a prime (1213303313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202217218 + ... + 202217223.

It is an arithmetic number, because the mean of its divisors is an integer number (404434442).

Almost surely, 2^1213303323 is an apocalyptic number.

1213303323 is a deficient number, since it is larger than the sum of its proper divisors (404434445).

1213303323 is an equidigital number, since it uses as much as digits as its factorization.

1213303323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404434444.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1213303323 is about 34832.5038290388. The cubic root of 1213303323 is about 1066.5710604523.

Adding to 1213303323 its reverse (3233033121), we get a palindrome (4446336444).

The spelling of 1213303323 in words is "one billion, two hundred thirteen million, three hundred three thousand, three hundred twenty-three".